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Acoustics
Of or pertaining to the study of mechanical waves in all stages of matter including sounds, vibration, ultrasounds, and infrasound.
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Acoustics
digital filter
Science; Acoustics
A digital processor that receives a sequence of input data values, executes an operation on them, and outputs a corresponding sequence of values that have been filtered with respect to the input.
fast Fourier transform
Science; Acoustics
A digital signal processing technique that converts a time record into a narrow band constant bandwidth filtered spectrum. Measurements are defined by specifying the frequency span and a number of ...
rayleigh disk
Science; Acoustics
A disk on a torsion suspension designed to measure the sound particle velocity in a fluid.
band pass filter
Science; Acoustics
A filter covering a band of frequencies from a lower cut-off frequency to an upper cut-off frequency. Outside the filter bandwidth, the signal is attenuated.
octave filter
Science; Acoustics
A filter whose upper-to-lower passband limits bear a ratio of 2. Is preferably centered at one of the preferred frequencies given in ISO R266 and should meet the attenuation characteristic of IEC ...
constant bandwidth filter
Science; Acoustics
A filter with fixed frequency bandwidth, expressed in Hertz (Hz), regardless of center frequency.